watch this....skip ahead to about 6:00

I would imagine it would be pretty frustrating if you weren't shooting a good match ammo.

 

Definitely explains himself. He has more patience than I

 

Owning 2 457 Varmint Mtr's I can honestly say both shoot non match ammo extremely well @ 50yrds from the bench. My best groups are obtained with select lot numbers of RWS R50, Eley Tennex and SK Rifle Match but my go to range ammo is Norma TAC/MATCH -22, CCI SV, Blazers and Federal Automatch.

 

I just put a CZ 20 inch MTR match Barrel on a CZ 455 , and shot CCI SV and Agulla SV Extra yesterday and was exceedingly impressed and very happy. In practical terms its just a tighter/ shorter chamber and so closing the bolt requires more effort as you are actually forcing the bullet to engrave on the rifling leads. Accordingly extraction of a chambered round is difficult, ie not advised.

 

As mentioned, you are safe shooting anything LR BUT THE STINGERS! DO NOT SHOOT STINGERS. The have a longer case. What makes a match chamber in a RF is no leade into the rifling, like most chambers have. When your cartridge is inserted into the chamber, its bullet is pushed into the rifling. There is no jump. It is also carefully cut to minimum dimensions.
CW

 

Why would you put a premium barrel on your rifle and then shoot garbage ammo? Something seriously wrong in that logic.

 

No rifle bought yet, just asking and learning

 

I'd suggest buying whichever CZ in the MTR, then getting some "good grade" bulk ammo like SK Magazine or Eley Sport for practice. Then spend the 'real money' on a bit of Match ammo so you'll know what you're missing - literally.

 

Fasteddie01, I'm getting that, after much reading, and the help I've received on here. Thank you

 

I have a 20” match Shaw barrel on a Ruger Precision that eats CCI standard velocity up I love it $4.99 a box I even shoot long range with it

 

All of mine shoot best with better SK, Eley or Lapua ammo.
But they all shoot norma Tac-22 well, just more fliers

 

Ok good. I thought it was just me getting that 1 flyer out of 10 shots

 

I have a a pro varmint and I shoot SK flavor depends on the day ! It also shoots CCI standard velocity and Norma pretty good for practice

 

In my opinion-there are at least two things that a match chamber gives you that you don't get in a "sporting" chamber.

1. Concentricity; since the bullet is engraved by the rifling, it's centered (concentric) in the bore upon loading. In a sporting chamber, the bullet has to make a jump from the chamber to the rifling and the bullet may be off center in the barrel.
2. Higher pressure and a more complete powder burn: In a sporting chamber, once the bullet crimp (what holds the bullet in the case), is overcome by the powder burn, the pressure within the case begins to drop. In a match chamber, the bullet is held in place in the case by the crimp, but also by its engraving of the rifling. It takes more pressure for the bullet to overcome both of these forces. More pressure and a more complete burn of the powder. Hopefully, you get a lower standard deviation in velocity as well as a higher velocity on a shot-to-shot basis, (however, a higher velocity is not always wanted as it's accompanied by a higher drag coefficient).

 

My 457 likes SK Semi Auto better than Standard Plus.

With .22s you really need to test a lot of ammo to find what your rifle likes best.

Trying SA,I'm able to save a few bucks.

Steven